But if the DJ threw on a song they didn't like, it was as if a giant vacuum had sucked them all off the dance floor, and the room grew quieter than a math test. A catchy song, it seems, can completely ...

Spotify has put a robot DJ into its app — a computerized song-spinner with a “stunningly realistic” voice that queues up music based on your musical tastes and listening history. The beta version of ...